Bug 13513 - undo PR11759 for newer PREEMPT_RT kernels
Summary: undo PR11759 for newer PREEMPT_RT kernels
Status: RESOLVED FIXED
Alias: None
Product: systemtap
Classification: Unclassified
Component: runtime (show other bugs)
Version: unspecified
: P2 normal
Target Milestone: ---
Assignee: Unassigned
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-12-17 15:00 UTC by Frank Ch. Eigler
Modified: 2011-12-17 15:07 UTC (History)
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Description Frank Ch. Eigler 2011-12-17 15:00:44 UTC 
Newer CONFIG_PREEMPT_RT kernels don't need this hack to let systemtap (somewhat) work.  The hack was never that good anyway, so removing it should make us better rt citizens.

+#if CONFIG_PREEMPT_RT
+static raw_spinlock_t itrace_lock;
+#else
 static spinlock_t itrace_lock;
+#endif
Comment 1 Frank Ch. Eigler 2011-12-17 15:07:22 UTC 
commit ffeb58b

Note that the stap running on -rt kernels is less robust than normal
ones, for reasons yet to be investigated.  See bug #13514.